Aeons Before the Big Bang - Sir Roger Penrose Christmas Lecture

Sir Roger Penrose is a prize winning mathematical physicist and Emeritus Rouse Ball Professor of Mathematics at the Mathematical Institute, University of Oxford.

In this talk he discusses that there is much observational evidence to confirm the existence of an enormously hot and dense early stage of the universe—referred to as the Big Bang. A good deal of this evidence comes from a detailed analysis of the cosmic microwave background (CMB), frequently referred to as the flash of the Big Bang, enormously cooled to about 3.7 degrees absolute, by the universes accelerating expansion. But this very detail presents new puzzles of various kinds, one of the most blatant being an apparent paradox in relation to the second law of thermodynamics. The hypothesis of inflationary cosmology has long been argued to explain away some of these puzzles, but it does not resolve some key issues, including that raised by the second law. In this talk, I describe a very different proposal, which posits a succession of universe aeons prior to our own. The expansion of the universe never reverses in this scheme, but the space-time geometry is nevertheless made consistent through a novel geometrical conception. Analysis of the CMB data, obtained from the WMAP satellite, has a tantalizing bearing on these issues.

This is a joint event organised by BCS Coventry Branch, IET Midlands Area Network, Coventry University Faculty of Engineering and Computing, SIGMA and More Maths Grads Project.

Category:

Education

Tags:

• big bang
• physics
• math
• mathematics
• space
• time
• relativity
• cosmology
• thermodynamics
• physicist

[CovStudent]

thanks Sir Roger Penrose for visiting us!

[ubear2b]

Mind-blowing!

[jjclassjj]

really informative and interesting

[distractionxx]

great video thanks

[jessyjessy4]

love the video man

[smuggecko]

you have some great stuff here

[edgarmartinez08]

The sound is low (and yes, I have my volume all the way up) and not of very good quality.

[Thejadjadjad]

@Lurco8 you are all faslse god and jesus exist

[katheryncruz24]

superb!

[THEHARMONIKZ]

He's probably the sweetest genius on the planet. I love how he sat down with some coloring pens and got funky.

Fantastic talk, thanks for sharing. :)

[Typho0n86]

WTB powerpoint

[albedoshader]

@MathLessonsForFree: Try better examples. Plants only grow because the sun provides low-entropy energy (few high energy photons) that is transformed into higher entropy energy (a lot more low energy photons) during the energy transformation process (thus growth) in plants.

And glass can only be made by putting a lot of heat into the system, so you end with a nice glass but higher entropy in the form of heat that dissipated into the surroundings.